Tag Archives: SDR Sharp

Designing a truly portable SDR

SWLing Post reader, London Shortwave, is working on a portable SDR (software defined radio) system based on his Toshiba Encore 8″ Windows tablet, FunCube Dongle Pro+, and supported by the excellent SDR# application. Today, he shared this photo of his entire kit, including his comments. If you’re interested in a similar portable SDR, take note of the USB isolator and extra (AA battery) power supply.

LondonShortwave-PortableLondon Shortwave plans to make an enclosure for the SDR, AA power supply, and USB isolator.

And although it may be easier said than done, it would be super if this enclosure has the same footprint as the Toshiba tablet, and the whip antenna can be mounted on the enclosure…He would then essentially have a case that he could attach to the tablet for instant portable shortwave radio fun.  (Oops–did I just raise the bar for you? Ha!)

Thanks for sharing, London Shortwave!

Spread the radio love

SDR# on a Toshiba Encore tablet PC

SDRSharp-ToshibaEncore-LondonShortwaveSWLing Post reader London Shortwave recently moved the Software Defined Radio (SDR) application SDR# (“SDR Sharp”) off of his MacBook Pro and onto a Toshiba Encore 8″ tablet PC. He recently posted this video of SDR# running his FunCube Dongle Pro+ on the Toshiba Encore tablet:

His reception of the Voice of Korea’s Spanish service is most impressive, especially considering the high level of RFI (radio noise) he must cope with at his home in London, England.

Click here to follow London Shortwave on Twitter.

Spread the radio love

SDR# now has AM synchronous detection


SWLing Post reader, London Shortwave writes with a remarkable story about the free SDR application, SDR#(or, “SDR sharp”). He writes:

“Two days ago, I emailed Youssef (SDR# developer lead) to ask if he would consider adding synchronous AM detection to his software at some point.

To my great surprise he e-mailed me back the same day and told me that it wouldn’t take him long to write the necessary code. A few hours later he sent me a preview copy of the software with the feature included (all I had to do was to swap one .dll file in the version I had installed at the time). The following day, he integrated it into the latest release!

With the new sync detector the software is rapidly becoming my favourite SDR application.

Here’s a demo video I made for Youssef (and everyone else!) to show how I’ve been getting on with it:

This is amazing–what’s especially impressive is that a first iteration of AM sync should be so well implemented.  I love the way you can use the IF shift to block out interference within a sideband, much like USB/LSB selectable sideband. There are paid and OEM SDR applications that can’t do this.

London Shortwave: you’ve convinced me to see if SDR# will drive any of my receivers. Many thanks!

Spread the radio love

Testing SDR#’s noise reduction in a London park


Yesterday, SWLing Post reader London Shortwave took his laptop, FunCube Dongle Pro+, and 6 meter long wire antenna to a local park where he tested SDR#‘s new IF noise reduction.

He made the following screencast/video where he toggles the IF noise reduction feature while receiving the BBC World Service’s Pashto language service on shortwave:

Most impressive! Indeed, I believe SDR#’s noise reduction might rival that of OEM applications. While I’m not the biggest fan of noise reduction for everyday use (due to inherent digital artifacts) it is a valuable tool when noise levels are high.

 Click here to follow @LondonShortwave on Twitter.

If you would like to experiment with SDR#, click here to download your free copy. SDR# has a number of additional plugins and dedicated users/developers who communicate via this this Yahoo! Group.

Many thanks to @LondonShortwave.

Any other readers using SDR#? Please comment.

Spread the radio love